<template>
  <div>
    <!-- //面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <el-row :gutter="15">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddgoods">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- table表格区域 -->
      <el-table :data="goodList" border stripe>
        <el-table-column
          type="index"
          label="序号"
          width="75px"
        ></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column
          label="商品价格(元)"
          prop="goods_price"
          width="105px"
        ></el-table-column>
        <el-table-column
          label="商品重量"
          prop="goods_weight"
          width="85px"
        ></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="160px">
          <template slot-scope="scope">
            {{ $moment(scope.row.add_time).format('YYYY-MM-DD LTS') }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              size="mini"
              icon="el-icon-edit"
              @click="editDialog(scope.row.goods_id)"
            ></el-button>
            <el-button
              type="danger"
              size="mini"
              icon="el-icon-delete"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- //分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 编辑对话框 -->

    <el-dialog
      title="修改商品信息"
      :visible.sync="editDialogVisible"
      width="50%"
    >
      <!-- 对话框 -->
      <el-form
        :model="editForm"
        :rules="editRules"
        ref="editFormRef"
        label-width="100px"
        @close="editDialogClose"
      >
        <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="editForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格" prop="goods_price">
          <el-input v-model="editForm.goods_price"></el-input>
        </el-form-item>
        <el-form-item label="商品数量" prop="goods_number">
          <el-input v-model="editForm.goods_number"></el-input>
        </el-form-item>
        <el-form-item label="商品重量" prop="goods_weight">
          <el-input v-model="editForm.goods_weight"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      //商品列表
      goodList: [],
      //商品总数
      total: 0,
      //控制编辑按钮 对话框的显示与隐藏
      editDialogVisible: false,
      //展示查询到的商品信息
      editForm: {},
      //表单验证规则
      editRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.getGoodList()
  },
  methods: {
    //根据分页获取对应的商品列表
    async getGoodList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品信息失败！')
      }
      this.$message.success('获取商品信息成功！')
      this.goodList = res.data.goods
      this.total = res.data.total
    },
    //获取分页对应的数据
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodList()
    },
    //跟据用户id删除商品
    async removeById(id) {
      const confirmResult = await this.$confirm('确定删除此商品吗?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('商品取消删除！')
      }
      //发送网络请求
      const { data: res } = await this.$http.delete(`goods/` + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除商品失败！')
      }
      this.$message.success('删除商品成功!')
      this.getGoodList()
    },
    //点击添加按钮 跳转页面
    goAddgoods() {
      this.$router.push('goods/add')
    },
    //点击编辑修改信息 查询信息
    async editDialog(id) {
      const { data: res } = await this.$http.get('goods/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询商品信息失败！')
      }
      this.editForm = res.data
      console.log(this.editForm)
      this.editDialogVisible = true
    },
    //监听修改用户对话框的关闭事件
    editDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return

        //发送网络请求
        const { data: res } = await this.$http.put(
          'goods/' + this.editForm.goods_id,
          {
            goods_name: this.editForm.goods_name,
            goods_price: this.editForm.goods_price * 1,
            goods_number: this.editForm.goods_number * 1,
            goods_weight: this.editForm.goods_weight * 1
            // goods_cat: this.editForm.goods_cat
          }
        )
        if (res.meta.status !== 201) {
          return this.$message.error('修改商品信息失败！')
        }
        this.$message.success('修改商品信息成功！')
        this.editDialogVisible = false
        this.getGoodList()
      })
    }
  }
}
</script>

<style lang="less" scoped>
.el-row {
  margin-bottom: 15px;
}
</style>
